Extended temporal cloak based on the inverse temporal Talbot effect.

Abstract

A temporal cloak with a significantly extended cloaking window and spatial distribution is created using the inverse temporal Talbot effect. The continuously cloaking window and the total cloaking ratio are 196 ps and 74%, respectively, which are 5.4 and 1.6 times larger than the previous record. Moreover, the cloak is maintained over 5-km of dispersion-compensating fiber (DCF), which enables cloaking temporal events at multiple positions simultaneously. To demonstrate the cloaking performance, both message-encoded and pseudo-random temporal events are successfully concealed. Last, but not least, since our configuration does not require opposite sign of dispersion, the idea can be applied analogously to the spatial domain according to the space-time duality, thus also enriching the spatial cloaking technique.